Jovian

Jovian (331-17 February 364) was Roman emperor from 26 June 363 to 17 February 364, succeeding Julian the Apostate and preceding Valentinian I.

Biography
Flavius Jovianus Augustus was born in 331 in Singidunum, Moesia (Belgrade, Serbia), and in 363 he succeeded his father Varronianus as commander of the imperial bodyguards. He witnessed Julian the Apostate's death at Ctesiphon in 363, and he was acclaimed as the new Roman emperor by his men. Jovian ended the pagan revival under Julian and returned Rome to Christianity, and he continued the retreat to Constantinople. However, he would not make it to the capital, dying of carbon monoxide poisoning from a charcoal-warmed fire at Dadastana, between Ancyra and Nicaea in Asia Minor.